* {
	/*全体css*/
	box-sizing: border-box;
	margin: 0;
	padding: 0;
	font-weight: 300;
}

body {
	font-family: 'source sans pro' sans-serif;
	color: white;
	/*设置字体颜色*/
	font-weight: 300;
	/*设置字体大小*/
}

body::-webkit-input-placeholder {
	/*webkit browsers*/
	font-family: 'source sans pro' sans-serif;
	color: white;
	font-weight: 300;
}

body::-moz-placeholder {
	/*mozilla Firefox 4 to 18*/
	font-family: 'source sana pro' sans-serif;
	color: white;
	opacity: 1;
	/*设置透明度*/
	font-weight: 300;
}

body::-moz-placeholder {
	/*mozilla Firefox 19+*/
	font-family: 'source sans pro' sans-serif;
	color: white;
	opacity: 1;
	font-weight: 300;
}

body::-ms-input-placeholder {
	/*Internet Explorer 10+*/
	font-family: 'source sans pro' sans-serif;
	color: white;
	font-weight: 300;
}

.wrapper {
	background: #50a3a2;
	background: -webkit-linear-gradient(top left, #50a3a2 0%, #53e3a6 100%);
	/*线性渐变*/
	background: linear-gradient(to bottom right, #50a3a2 0%, #53e3a6 100%);
	opacity: 0.8;
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	overflow: hidden;
}

.wrapper.form-success .container h1 {
	-webkit-transform: translateY(85px);
	-ms-transform: translateY(85px);
	transform: translateY(85px);
}

.container {
	max-width: 600px;
	margin: 0 auto;
	padding: 80px 0;
	height: 400px;
	text-align: center;
}

.container h1 {
	font-size: 40px;
	-webkit-transition-duration: 1s;
	transition-duration: 1s;
	-webkit-transition-timing-function: ease-in-out;
	transition-timing-function: ease-in-out;
	font-weight: 200;
}

form {
	padding: 20px 0;
	position: relative;
	z-index: 2;
	/*设置表单在图层2*/
}

form input {
	-webkit-appearance: none;
	-moz-appearance: none;
	appearance: none;
	outline: 0;
	border: 1px solid rgba(255, 255, 255, 0.4);
	background-color: rgba(255, 255, 255, 0.2);
	width: 250px;
	border-radius: 3px;
	padding: 10px 15px;
	margin: 0 auto 10px auto;
	display: block;
	text-align: center;
	font-size: 18px;
	color: white;
	-webkit-transition-duration: 0.25s;
	transition-duration: 0.25s;
	font-weight: 300;
}

form input:hover {
	/*选择鼠标指针浮动在其元素上，并为其加样式*/
	background-color: rgba(255, 255, 255, 0.4);
}

form input:focus {
	/*鼠标指针浮动的元素获得焦点效果，并为其加样式*/
	background-color: white;
	width: 300px;
	color: #53e3a6;
}

form button {
	-webkit-appearance: none;
	/*清除原来的按钮属性*/
	-moz-appearance: none;
	appearance: none;
	outline: 0;
	/*清除轮廓*/
	background-color: white;
	border: 0;
	padding: 10px 15px;
	color: #53e3a6;
	border-radius: 3px;
	/*圆角边框*/
	width: 250px;
	cursor: pointer;
	/*使鼠标的光标变化*/
	font-size: 18px;
	-webkit-transition-duration: 0.25s;
	/*控制动画时间*/
	transition-duration: 0.25s;
}

form button:hover {
	background-color: #f5f7f9;
}

.bg-bubbles {
	position: absolute;
	/*绝对定位*/
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	z-index: 1;
	/*设置ul元素在图层1*/
}

.bg-bubbles li {
	position: absolute;
	list-style: none;
	/*清除掉列表项目标记*/
	display: block;
	/*此元素将显示为块级元素，此元素前后会带有换行符*/
	width: 40px;
	height: 40px;
	background-color: rgba(255, 255, 255, 0.15);
	bottom: -160px;
	/*让li沉底*/
	-webkit-animation: square 25s infinite;
	/*使用简写属性，将动画与 li元素绑定,并设置了元素的名称，动画时间，设置动画无限次播放*/
	animation: square 25s infinite;
	animation-delay:2S ;
	-webkit-transition-timing-function: linear;
	/*transition-timing-function 属性规定过渡效果的速度曲线。该属性允许过渡效果随着时间来改变其速度。*/
	transition-timing-function: linear;
	/*linear:相同的速度*/
}

.bg-bubbles li:nth-child(1) {
	/*nth-child是选择器，规定父元素li的每个子元素的样式*/
	left: 10%;
}

.bg-bubbles li:nth-child(2) {
	left: 20%;
	width: 80px;
	height: 80px;
	-webkit-animation-delay: 2s;
	/*等待两秒，然后开始动画*/
	animation-delay: 2s;
	-webkit-animation-duration: 17s;
	/*规定完成一个动画周期*/
	animation-duration: 17s;
}

.bg-bubbles li:nth-child(3) {
	left: 25%;
	-webkit-animation-delay: 4s;
	animation-delay: 4s;
}

.bg-bubbles li:nth-child(4) {
	left: 40%;
	width: 60px;
	height: 60px;
	-webkit-animation-duration: 22s;
	animation-duration: 22s;
	background-color: rgba(255, 255, 255, 0.25);
}

.bg-bubbles li:nth-child(5) {
	left: 70%;
}

.bg-bubbles li:nth-child(6) {
	left: 80%;
	width: 120px;
	height: 120px;
	-webkit-animation-delay: 3s;
	animation-delay: 3s;
	background-color: rgba(255, 255, 255, 0.2);
}

.bg-bubbles li:nth-child(7) {
	left: 32%;
	width: 160px;
	height: 160px;
	-webkit-animation-delay: 7s;
	animation-delay: 7s;
}

.bg-bubbles li:nth-child(8) {
	left: 55%;
	width: 20px;
	height: 20px;
	-webkit-animation-delay: 15s;
	animation-delay: 15s;
	-webkit-animation-duration: 40s;
	animation-duration: 40s;
	background-color: rgba(255, 255, 255, 0.3);
}

.bg-bubbles li:nth-child(9) {
	left: 25%;
	width: 10px;
	height: 10px;
	-webkit-animation-delay: 2s;
	animation-delay: 2s;
	-webkit-animation-duration: 40s;
	animation-duration: 40s;
	background-color: rgba(255, 255, 255, 0.3);
}

.bg-bubbles li:nth-child(10) {
	left: 90%;
	width: 160px;
	height: 160px;
	-webkit-animation-delay: 11s;
	animation-delay: 11s;
}

@-webkit-keyframes square {
	/*通过 @keyframes 规则，创建动画*/
	0% {
		-webkit-transform: translateY(0);
		transform: translateY(0);
	}
	100% {
		-webkit-transform: translateY(-700px) rotate(600deg);
		transform: translateY(-700px) rotate(600deg);
	}
}

@keyframes square {
	0% {
		-webkit-transform: translateY(0);
		transform: translateY(0);
	}
	100% {
		-webkit-transform: translateY(-700px) rotate(600deg);
		transform: translateY(-700px) rotate(600deg);
	}
}